Angels are celestial spirits who were created by God to worship and serve him in Heaven. They were created before time and matter, making them the oldest race of beings in existence. Angels were explored in depth in Memnoch the Devil, in which the character Memnoch is a fallen rebel archangel who serves God as the ruler of Hell. According to Memnoch, angels mostly wonder at and enjoy God's creations, holding no resentment towards him, as they do not experience human mortality.
Angels are spiritual superhuman beings superior to humans in both power and intelligence. They are incorporeal, which means they have no physical presence or body and cannot be seen, heard, or felt by creatures with physical senses, nor can they directly interact with the physical world or objects. Angels largely appear to and interact with characters who practice Catholicism, and so may be ambiguously interpreted by some readers to be a different supernatural being, like a spirit, in a familiar form. This is one explanation Lestat speculates may be the truth of Memnoch's nature.
In Vittorio the Vampire, angels appear to the title character when he is mortal, and appear to him briefly in paintings representing their likenesses after he becomes a vampire. In Blood Canticle, Lestat claims to have met angels, but does not fully explain when or what occurred.